If Mickey Rooney, Dudley Moore, and Danny DeVito can get laid, then you have no excuse, except your own damned self. Stop blaming others for your shitty attitude and do something about it, you stunted manchild.

Dizzy Dream makes a fine point: These guys are locked in the high school (or even grade school) experience wherein kids are /horrid/ to each other. But adolescents are in a constant maelstrom of hormones, brain reconstruction, and learning about their place in the social hierarchy. Most people grow out of that, but obviously not all.